Invention Grant
- Patent Title: Systems and methods for engine air filter system diagnostics
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Application No.: US17176706Application Date: 2021-02-16
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Publication No.: US11448152B2Publication Date: 2022-09-20
- Inventor: Lei Li , Terry W. Ostan , Joseph K. Moore , Chong Keong Tang , Gregory A. Piper
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Quinn IP Law
- Main IPC: F02D41/22
- IPC: F02D41/22 ; B60Q9/00 ; G07C5/08 ; F02M35/024

Abstract:
A method for diagnosing an air filter status includes receiving, by a controller, sensor data indicative of a mass air flow rate, an air temperature and an air pressure of an air cleaner assembly including an air filter, determining an air filter life remaining from the sensor data, and receiving data indicative of a vehicle condition. The method also includes determining when a first condition is satisfied and when true, triggering an air filter leakage alert. When the first condition is not satisfied, the controller determines when a second condition is satisfied. When the second condition is satisfied, the controller determines when a third condition is satisfied, and when the third condition is satisfied, triggers an air filter snow intrusion alert. When the second condition is satisfied and the third condition is not satisfied the controller triggers an air filter blockage alert.
Public/Granted literature
- US20220260031A1 SYSTEMS AND METHODS FOR ENGINE AIR FILTER SYSTEM DIAGNOSTICS Public/Granted day:2022-08-18
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